diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
index fe4d15461ffe..7ef205eab4ec 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/DefaultGenerator.java
@@ -31,7 +31,7 @@
 import io.swagger.v3.oas.models.tags.Tag;
 import lombok.Getter;
 import org.apache.commons.io.FilenameUtils;
-import org.apache.commons.io.comparator.PathFileComparator;
+import org.apache.commons.io.IOCase;
 import org.apache.commons.lang3.ObjectUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.api.TemplateDefinition;
@@ -1981,7 +1981,8 @@ private void generateFilesMetadata(List<File> files) {
                 // NOTE: Don't use File.separator here as we write linux-style paths to FILES, and File.separator will
                 // result in incorrect match on Windows machines.
                 String relativeMeta = METADATA_DIR + "/VERSION";
-                filesToSort.sort(PathFileComparator.PATH_COMPARATOR);
+
+                final List<String> relativePaths = new ArrayList<>(filesToSort.size());
                 filesToSort.forEach(f -> {
                     // some Java implementations don't honor .relativize documentation fully.
                     // When outDir is /a/b and the input is /a/b/c/d, the result should be c/d.
@@ -1994,10 +1995,15 @@ private void generateFilesMetadata(List<File> files) {
                         relativePath = relativePath.replace(File.separator, "/");
                     }
                     if (!relativePath.equals(relativeMeta)) {
-                        sb.append(relativePath).append(System.lineSeparator());
+                        relativePaths.add(relativePath);
                     }
                 });
 
+                Collections.sort(relativePaths, (a, b) -> IOCase.SENSITIVE.checkCompareTo(a,b));
+                relativePaths.forEach(relativePath -> {
+                    sb.append(relativePath).append(System.lineSeparator());
+                });
+
                 String targetFile = config.outputFolder() + File.separator + METADATA_DIR + File.separator + config.getFilesMetadataFilename();
 
                 File filesFile = this.templateProcessor.writeToFile(targetFile, sb.toString().getBytes(StandardCharsets.UTF_8));